Patent GB-421426-A (GB)
Title: Improvements in or relating to cash registers
IPC: G06C11/08
Filed: 1933-08-31
Abstract: 421,426. Cash registers. BARON, H., 231, Strand, London.-(Siemens & Halske Akt.-Ges. ; Siemensstadt, Berlin) Aug. 31, 1933, No. 24207. [Class 106 (i)] [See also Group VIII] In a differentially-set cash register adapted to perforate a strip for subsequent statistical compilation, the selecting members for the perforators are rigidly connected to the handadjusted differential setting- members. The invention is described as applied to a differentially-setcrank-operated cash register having indicating, perforating, printing and drawer-release mechanisms but no totalizer. Setting means. The machine is provided with a single bank of differentially adjustable setting-levers comprising a clerk's lever 20, Fig. 2, four amount levers and five item characterization levers. All the levers are rotatable on the main shaft 25 and each carries a toothed disc 23, Figs. 9 and 20, for setting the printing elements and indicators, a toothed justifying segment 26 co-operating with a pawl 145, and a series of notched segments 28-31 for controlling the actuation of perforators according to a four point code. In addition, the two end levers carry unnotched segments 27 for controlling the formation of feed-perforations near the edges of the record strip. The setting- levers are simultaneously restored at the end of an operation by a bail 155, Figs. 2 and 19, geared to a spring-retracted operating handle 151. Perforating mechanism. The record strip, Fig. 23, and perforating mechanism therefor are carried by a frame 54, 55, Figs. 2 and 10, that during each operation is rocked about a shaft 56 by an eccentric on the main shaft 25. The strip is fed from a supply roll 70 beneath punches 75 to a storage roll 72 by means of pin-wheels 83. The pin-wheels are rotated step by step by a cam 92 on the main shaft operating through lever 93, pawl-carrying rocker 95, and ratchet-wheel 100. A second pawl on the rocker rotates a ratchet-wheel 101 connected through a friction clutch to the storage roll. During the upward movement of the frame, the punches 75 that abut high spots on the notched segments of the setting levers are actuated to perforate the item on the strip. The punches are carried by slotted springs 78, Fig. 10b, the free ends of which, during the downward rocking of the frame, abut a fixed stop member positively to retract the punches from the strip. The punchings removed from the strip are collected in a drawer-like container 81. The record strip is normally retained in mesh with the pin-wheels by guide-blocks 84 carried by a lever 86 that may be rotated about its pivot 85, and be held in inoperative position by a latch 87 while the strip is being changed. The lever while in inoperative position prevents the closing of a door giving access to the mechanism. The recordstrip terminating-symbol is perforated by adjusting the clerk's setting lever to its extreme position. Such adjustment is prevented by a stop 148, Fig. 2, that normally intercepts the lever but may be disabled by a push button 147. Printing on inserted material. The item is printed on a bill inserted in an opening 51, Fig. 2, and is printed by a resilient platen 53 carried by the rocking frame of the perforating mechanism and serving to press the bill against one or more sets of type-wheels 50 geared to the setting-levers. An ink-ribbon is driven and reversed by an axially slidable shaft 60. Differentially-moved indicators. Drum indicators 41, Fig. 2, are geared to the amount and item - characterizing setting - levers, the former being duplicated for displaying the amount at both sides of the machine. For this purpose the units drums are rigidly connected, the tens drums are connected by gears fast on an intermediate shaft 37, the hundreds drums are fast on the indicator shaft 33, and the intermediate gears of the thousands drums mesh with pinions fast on a counter-shaft 42. Cash drawer mechanism. A number of drawers, Figs. 2, 4 and 7, are arranged in the base of the machine. Each drawer is mounted on three rollers of which one 119 is carried by the drawer and the other two 117 by the casing. The free end of a latch 123, Fig. 7, pivoted to the drawer, co-operates with a fixed stop 124 normally to prevent its complete withdrawal. The latch may be disabled by manipulation of its bent inner end to which access may be had from the interior of the drawer. Rubber stops 122 deaden the noise of closing the drawers. Each drawer is normally held closed against the action of a spring by a latch 114 adjustable for wear about a supporting shaft and controlled by the clerk's setting lever. For this latter purpose, each latch is connected through its shaft and a link 108 to a lever 107 mounted on a shaft 85 carried by the rocking frame for the perforating mechanism. As the frame rocks, one of the levers 107 will engage a high spot on one of a series of segments 103-106, Figs. 4 and 9, carried by the clerk's setting lever, the consequential rocking of the lever serving to release the drawer that corresponds to the position of the clerk's lever. Main-shaft control. The main-shaft 25, Figs. 2 and 20, is rotated by a hand crank through one revolution during each machine operation. Forward rotation of the shaft is normally prevented by the abutment of a stop 133 on a bell-crank 132 with a projection 128<x> in a cam race 128<a> formed in a disc 128 fast on the shaft. Any considerably backward rotation of the shaft is prevented by a detent 129. A slight backward rotation, however, serves to free the shaft by causing a pawl 134 to rotate the bell-crank 132 and stop 133 into inoperative position. The initial backward movement is rendered unnecessary if any one of the setting- levers is adjusted between operations, such action moving the corresponding justifying pawl 145 and swinging a bail 146 rigid with the bell-crank 132. Rotation of the main-shaft prior to the adjustment of the clerk's setting lever is prevented by a pawl 140, an arm 141 of which co-operates with a shouldered stop 20<a> on the setting-lever. Adjustment of a setting-lever is prevented, during the rotation of the main shaft, by the bail 146 that is pressed against the justifying pawls by the bell-crank 132. The main-shaft is locked when the supply of record strip is exhausted by means of a pawl 142 controlled by a sensing lever 143. Means for locking the main shaft during a restoring operation comprise a pawl 139 fast on a shaft 137, Fig. 19, which shaft is rocked during the downward excursion of the restoring handle 151 by means of a cam disc 156 rigid with the restoring bail and co-operating with a roller 157<a> on a lever 157 that is loose on the shaft 137, but connected thereto through a trip. latch 158 and frame 160. After the restoration of the setting-levers the latch is tripped by a, stud 156<b> on the cam disc to free the mainshaft. The frame 160 by means of a bail 161 also serves to disable the justifying pawls 145 for the setting-levers during restoration.